Key details for this exam, checked against the published exam outline
Each question shows the correct answer and an explanation of why it is right
What is a fundamental structural feature of JSON? (Choose the single best answer.)
JSON Fundamentals:JSON (JavaScript Object Notation) is a text-based format for representing data in a structured, yet flexible way. Its key features are:
Key-Value Pairs:Information is organized as 'key':'value' pairs, making it human-readable.
Plaintext:JSON is not encrypted, ensuring easy parsing across different systems.
JSON vs. Other Options
Not Encrypted:Security must be handled at a higher layer if needed.
Not Optimized for Databases:While JSON can be stored in databases, it's designed for data exchange, not database structure.
Not Inherently Compressed:Compression can be used with JSON, but it's not a core feature.
JSON Data Structures:Explanations of how arrays and nested objects are handled within JSON.
You are implementing a smart office wireless solution for a small business. The business owner indicates that It is acceptable to use consumer-targeted wireless devices. What is a common negative attribute of consumer-targeted smart home or smart office devices?
Consumer Smart Devices Limitation:Many consumer-oriented smart devices are designed for simplicity and cost-effectiveness, leading to reliance on the crowded 2.4 GHz band.
Consequences:
High Interference:Increased potential for interference from Wi-Fi and other 2.4 GHz devices.
Limited scalability:Performance and reliability may degrade in busy wireless environments.
What is the spacing between ZigBee channels when operating in the 2.4 GHz frequency band?
ZigBee Channel Spacing:ZigBee channels in the 2.4 GHz band are spaced 5 MHz apart. This helps manage interference in the crowded 2.4 GHz spectrum.
How does OFDMA differ from OFDM?
OFDM vs. OFDMA:
OFDM (Orthogonal Frequency-Division Multiplexing):Divides a channel into multiple subcarriers for data transmission.
OFDMA (Orthogonal Frequency-Division Multiple Access):Extends OFDM by allowing multiple users to share subcarriers simultaneously, improving efficiency and spectral utilization.
Reference
OFDM:https://en.wikipedia.org/wiki/Orthogonal_frequency-division_multiplexing
OFDMA:https://en.wikipedia.org/wiki/Orthogonal_frequency-division_multiple_access
What is the most common difference between a single board computer (SBC) and a controller board?
SBCs (Single Board Computers):Designed as standalone, small-form-factor computers. They often include:
Display Interfaces:HDMI, DisplayPort, etc.
Input Connections:USB for keyboards, mice, etc.
General Purpose Functionality:Can run a full operating system for wider applications.
Controller Boards:Focus on controlling specific hardware or systems.
Limited direct I/O:Limited connectors for displays/input devices.
Specialized tasks:Designed for embedded applications within larger systems.
Reference
SBC Examples:https://www.raspberrypi.org/,https://www.beagleboard.org/
What is a valid reason to continue using older wireless networking technologies?
Legacy Support:The primary reason to continue using older wireless technologies is the need to connect with devices that don't support newer standards (e.g., old sensors or equipment).
Other Reasons (Not as Strong):
Cost:Replacing legacy devices can be expensive.
Reliability:Some legacy technologies might be well-proven in specific settings.
Exam domains verified against: Official CWNP CWISA-103 exam guide, last checked October 2026.
Candidates must understand common wireless IoT technologies, their applications and communication protocols across various network types. This includes knowledge of standards organizations like IEEE, IETF and Wi-Fi Alliance, plus the hardware and software components that make up IoT devices and gateways.
Sample question from this domain above: Q1
Candidates must grasp RF fundamentals including wave characteristics, modulation techniques, and the capabilities of RF components like radios and antennas. This includes understanding signal metrics such as decibels and dBm, as well as the behaviour of RF in different frequency bands.
Candidates must identify system requirements from use cases, work within technical and regulatory constraints, and select appropriate wireless IoT solutions. This includes planning technical requirements for networking, systems, APIs and protocols, plus understanding common solutions like LoRaWAN, Zigbee and location services.
Candidates must understand implementation best practices including pilot testing, configuration and installation procedures. This includes validating implementations through testing and troubleshooting, configuring security solutions, and ensuring proper knowledge transfer to end users and administrators.
Sample question from this domain above: Q4
Candidates must administer wireless solutions across different vertical markets and troubleshoot common problems like interference and misconfiguration. This includes using scripting and programming languages, understanding data structures and APIs, and knowing application architectures used in wireless IoT solutions.
Common questions about the exam itself
